Waterproof composition and method of making the same



UNITED STATES PATENT onrion PATRICK W. KIERNAN, OF LOWELL,MASSACHUSETTS, ASSIGNOB, TO LOWELL -IBLEAGHEBY, OF LOWELL,MASSACHUSETTS, A CORPORATION OF MASSACHU- SETTS.

WATERPROOF COMPOSITION AND METHODOF MAKING THE SAME.

1,327,239. No Drawing.

To all whom it mag concern:

Be it known that I, PATRIGK W. KIERNAN, a citizen of theUnited States;residing at Lowell, in the county of Middlesex and State ofMassachusetts, have invented certain new and useful Improvements inWaterproof Composition and Methods of Making the Same;'an'd I do herebydeclare the following to 'be a full, clear, and exact description of theinvention, such as will enable others skilled in the art .to which itappertains to make and use the same.

The present invention relates .to a water proof composition and methodof makmg the same. The object of the inventlon is to produce an improvedwater proof composition of a paraflin base of such a character that theparaflin is prevented 'from solldlfil compositio Y hereinafter cationfor an indefinite period of time.

The inventiofiqonsists in the. water proof and method of making the samedescribed and particularly definedin the claims.

' In continuing the stirring According to' the present invention, 810pounds of parafiin, 112 pounds of stearic acid, and 125 pounds ofpetrolatum are placed in a vessel with about gallons of water. Steam-isadmitted to the vessel for the purpose of heating the "contents, and thewhole is agitated and stirred until the solids are emulsified in thewater.

The temperature at which this 0 eration is performedshould be'about 16027 pounds of soda-ash is dissolved in a separate vessel in lukewarmwater to make a soda-ash. solution. The temperature of the first vesselcontaining the parafiin, stearic acid and petrolatum emulsion is nowreduced to about-130 E, and then maintaining the temperature at 130? F.,and continuing the stirring or agitation of the mixture, the

soda-ash solution is slowly added to the emulsion. From20 to 30 minutesshould be occupied in stirrin the sodayash solution into the emulsion. fthe soda-ash solution be added too quickly, or when the emulsion is toohot, an objectionable tendency to the violent evolution of carbon dioxidoccurs. and allowing for the condensation of steam in thevemulsionenough additional water should .be intro-; duced to bring thequa'ntityup from 400 to Specification of Letters Patent.

similar to that of soft soap. This .ing emulsion will be used inparafiini otherwise, the mixture,

- each other is not precisely known, believed that the soda-ash combineswith the Patented Jan. 6, 1920.

Application filed July 25, 1918. Serial No. 248,686.

450 gallons. This paraflining mixture or emulsion will keep anindefinitelength of time. When it cools to room temperatures it assumesa quasi-solid condition somewhat paraffintextile fabrics by placing itin a steamac eted kettle, and raismg its temperature by means of a steamjacket up to about to F- The cloth, if in piece form, will be drawnslowlythrough a bath of the paraflin emulsion and then passed betweenrollers to remove anyexcess of the material with which the fabric isimpregnated. One of these rollers will be steam heated.

More or less of the parafiin, stearic acid be used in preparing andpetrolatum ma Whena larger ro the emulsified para portion of: petrolatumis used the 0 hle, and when less petrolatum is used the L cloth will bes'tifl'er.

substances are the substancesto be preferred,

because the best results are apparently obtained with them.- In mixingthe parafiin, stearic acid and etrolatum with water, the temperature oft e mixture may be secured by the use of a steam jacketed kettle orinstead of by turning steam into but the direct introduction of steaminto the mixture is preferred, because it not only serves to heat themixture, but also contributes to its agitation, Care'must be exercisedin preventin the temperature from rising above The breaking down of theingredients is liable to oocurat hi%her temperatures.

' he exact action of the substances upon but it is;

stearic acid to form a soap which contributes 0th 7 parafiined bythemixture will be more flexito the penetration of the fabric by'the jemulsified 'paraifin. v

One feature of thespecific compound herein above described of greatimportance, and which contributes to the economy of the method,residesin the fact that the mixture, once prepared, may be kept for anindefinite length of time, parafiin contents.-

without solidification of the Havin thus described the invention, 2. Themethod ofimaking a Water proof What is c aimed,is: composition whichconsists in preparing an 1. A. water proof composition consistingemulsion of paraffin, petrolatum fatty acid, 10 of an emulsion of 810parts of paraflin, 125 and water at 160 F., cooling the mixture to 5parts ofpetrolatum,"the reaction products 130 F. adding a solution ofsoda ash and of 112 parts of a fatty acid and 27 parts of agitating themass. soda ash and water; 3 PATRICK W. KIERNAN.

